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Improving ion current feedback for HCCI engine control

Aulin, Hans LU ; Bentioulis, Pascal; Tunestål, Per LU ; Hyvönen, Jari LU and Johansson, Bengt LU (2007) Powertrain and Fluid Systems Conference and Exhibition, 2007 In Powertrain and Fluid Systems Conference and Exhibition
Abstract

In HCCI you do not have the same control of the combustion like in SI and Diesel engines. Controlling the start of a combustion event is a difficult task and requires feedback from previous cycles. This feedback can be retrieved from ion current measurements. By applying a voltage over the spark gap, ions will lead a current and a signal that represents the combustion in the cylinder will be retrieved. Voltages of 450 V were used. The paper describes a new method to enhance the combustion phasing from the Ion current trace in HCCI engines. The method is using the knowledge of how the signal should look. This is known due to the fact that the shape of the ion current signal is similar from cycle to cycle. This new observation is shown in... (More)

In HCCI you do not have the same control of the combustion like in SI and Diesel engines. Controlling the start of a combustion event is a difficult task and requires feedback from previous cycles. This feedback can be retrieved from ion current measurements. By applying a voltage over the spark gap, ions will lead a current and a signal that represents the combustion in the cylinder will be retrieved. Voltages of 450 V were used. The paper describes a new method to enhance the combustion phasing from the Ion current trace in HCCI engines. The method is using the knowledge of how the signal should look. This is known due to the fact that the shape of the ion current signal is similar from cycle to cycle. This new observation is shown in the paper. Also the correlation between the ion current and CA50 was studied. Later the signals have been used for combustion feedback.

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type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Powertrain and Fluid Systems Conference and Exhibition
conference name
Powertrain and Fluid Systems Conference and Exhibition, 2007
external identifiers
  • scopus:84877444313
DOI
10.4271/2007-01-4053
language
English
LU publication?
yes
id
ee4c3f95-2b16-413d-ae61-b1ae2d283c18
date added to LUP
2017-12-15 08:40:16
date last changed
2018-01-07 12:28:59
@inproceedings{ee4c3f95-2b16-413d-ae61-b1ae2d283c18,
  abstract     = {<p>In HCCI you do not have the same control of the combustion like in SI and Diesel engines. Controlling the start of a combustion event is a difficult task and requires feedback from previous cycles. This feedback can be retrieved from ion current measurements. By applying a voltage over the spark gap, ions will lead a current and a signal that represents the combustion in the cylinder will be retrieved. Voltages of 450 V were used. The paper describes a new method to enhance the combustion phasing from the Ion current trace in HCCI engines. The method is using the knowledge of how the signal should look. This is known due to the fact that the shape of the ion current signal is similar from cycle to cycle. This new observation is shown in the paper. Also the correlation between the ion current and CA50 was studied. Later the signals have been used for combustion feedback.</p>},
  author       = {Aulin, Hans and Bentioulis, Pascal and Tunestål, Per and Hyvönen, Jari and Johansson, Bengt},
  booktitle    = {Powertrain and Fluid Systems Conference and Exhibition},
  language     = {eng},
  title        = {Improving ion current feedback for HCCI engine control},
  url          = {http://dx.doi.org/10.4271/2007-01-4053},
  year         = {2007},
}